stage1 重写进行代码设计并重构 提供diag替换老旧错误处理

nob.c

@@ -23,6 +23,7 @@ static const char *spl_cli_srcs[] = {"stage0/spl_cli.c", VM_SRCS};
 static const char *test_srcs[] = {"stage0/test_spl_vm.c", VM_SRCS};
 static const char *splc0_srcs[] = {
     "stage1/splc0.c",
+    "stage1/spl_diag.c",
     "stage1/spl_lexer.c",
     "stage1/spl_ast.c",
     "stage1/spl_dumptree.c",